US20220192049A1 - Heatsink arrangement for a power converter - Google Patents
Heatsink arrangement for a power converter Download PDFInfo
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- US20220192049A1 US20220192049A1 US17/543,859 US202117543859A US2022192049A1 US 20220192049 A1 US20220192049 A1 US 20220192049A1 US 202117543859 A US202117543859 A US 202117543859A US 2022192049 A1 US2022192049 A1 US 2022192049A1
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- Prior art keywords
- heatsink
- capacitor
- arrangement according
- heatsink arrangement
- capacitance
- Prior art date
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- 239000003990 capacitor Substances 0.000 claims abstract description 44
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 239000004065 semiconductor Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 7
- 230000003071 parasitic effect Effects 0.000 claims description 5
- 239000012809 cooling fluid Substances 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 6
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
Definitions
- the present invention pertains to a heatsink arrangement for a power electronic converter, in particular converters used in medium voltage power conversion such as a medium voltage drive for driving an electric motor, wherein the heatsink of the heatsink arrangement is grounded via a grounding capacitor.
- the invention also pertains to a power converter for driving an electric motor, comprising a corresponding heatsink arrangement, semiconductor switches mounted on the heatsink and a fluid cooling system.
- the heatsinks are left ungrounded i.e. floating and deionized water or other isolating fluids are used within the cooling systems of the heatsinks. These designs ensure that both, capacitively coupled voltages and fault voltages can be tolerated by the fluid. However, a problem arising with these designs is that the deionized water cooling systems are relatively expensive and require more maintenance effort.
- the heatsinks may be solidly grounded and normal tap water, i.e. non-deionized water may be used as the cooling fluid.
- the grounding may protect the conductive fluid against harmful voltages, while the cooling systems is cheaper and easier to maintain than in the previous example.
- ground current may exceed the 30 A limit set by standard UL 347A during faults.
- the aim of the present invention is to provide an improved heatsink arrangement and a power converter comprising a corresponding heatsink arrangement, which overcome the above-mentioned problems.
- This aim is achieved by the heatsink arrangement according to claim 1 and the power converter according to claim 7 .
- Preferred embodiments of the invention are subject to the dependent claims.
- a heatsink arrangement for power electronic equipment, such as a power converter, is provided.
- the heatsink arrangement comprises a heatsink, which may be a cold-plate. It may have a complex geometry, comprising cooling fluid conduits and/or cooling fins.
- the power electronic converter may be a medium voltage drive designed for driving an electric motor.
- the heatsink is grounded via a grounding capacitor.
- the capacitor protects the cooling fluid against capacitively coupled voltages
- normal i.e. non-deionized water can be used as the cooling fluid.
- the fluid cooling systems may be provided at lower costs, while at the same time ground current during faults may be limited to less than 30 A by choosing an appropriate capacitance value of the grounding capacitor.
- a resistor is provided in parallel to the grounding capacitor, further enhancing the performance of the device during normal operation and faults. There may be no other components in the parallel branches of the resistor and the capacitor other than said resistor and capacitor.
- a voltage monitor measuring the voltage across the grounding capacitor is provided for detecting faults.
- the voltage monitor may detect permanent fault conditions of the device, which may compromise the fluid cooling system if undetected.
- the voltage monitor may be used for monitoring the voltage across the grounding capacitor and comparing it with a threshold value.
- the voltage monitor may be used in combination with a control device and/or may be used for generating an alarm and/or a signal when a fault is detected. Alternatively or additionally, the voltage monitor may be used for tripping some safety device such as a circuit-breaker in case a fault has been detected.
- the voltage monitor may be arranged in parallel to the capacitor and/or in parallel to the resistor.
- the voltage across the grounding capacitor ( 2 ) is monitored and beyond a defined threshold, a signal is sent to a controller.
- the current through the capacitor during faults is limited to less than 30 A.
- the skilled person may choose the capacitor's capacitance in dependence on the overall layout and the operating voltages of the drive so as to limit the fault current through the capacitor to the cited value.
- the capacitor's capacitance is smaller than 19 ⁇ F and is preferably in the range of 0.1-10 ⁇ F.
- the invention is also directed at a power converter in particular a medium voltage drive for driving an electric motor, comprising a heatsink arrangement according to any of claims 1 to 6 , semiconductor switches mounted on the heatsink and a fluid cooling system.
- semiconductor switches may refer to a single switch or to any number of switches mounted on the heatsink.
- the switches may be mounted directly or indirectly on the heatsink.
- the drive may be operational for voltages greater than 1000 V and in particular in a voltage range from 1 kV to 35 kV.
- the drive may be designed for operation at three or more phases and/or may include at least one medium voltage insulated-gate bipolar transistor.
- the fluid of the fluid cooling system is non-deionized water.
- the cooling system may comprise fluid conduits, at least one pump and/or other components typically used for providing a cooling fluid flow in a power electronic converter.
- the non-deionized water may be normal i.e. tap water.
- the semiconductor switches have limited electrical isolation towards the heatsink, which is bridged by a parasitic capacitance.
- FIG. 1 schematic view of a floating heatsink arrangement in a medium voltage drive according to the state of the art
- FIG. 2 schematic view of a solid grounded heatsink arrangement in a medium voltage drive according to the state of the art
- FIG. 3 schematic view of a heatsink arrangement in a medium voltage drive according to the present invention.
- FIG. 4 schematic view of a heatsink arrangement in a medium voltage drive according to the present invention and including heatsink voltage monitor and a parallel resistor.
- FIG. 1 is a schematic view of a heatsink 1 in a medium voltage drive 10 according to the state of the art.
- the heatsink 1 is a “floating” heatsink 1 i.e. it is left ungrounded. Therefore, the fluid of the fluid cooling system 6 is chosen to be an isolating fluid such as deionized water. Grounding is indicated by GND in the figures and corresponds to an earthing.
- semiconductor switches 5 are mounted on the heatsink 1 via an insulation layer comprising a parasitic capacitance 7 .
- a fluid cooling system 6 cools the switches 5 through the heatsink 1 .
- deionized water raises the production and maintenance costs of the drive 10 and complicates its maintenance.
- the same reference numbers refer to the same features throughout the figures.
- FIG. 2 is a schematic view of an alternative drive 10 layout, which is also known from the art.
- the heatsink 1 is grounded.
- Normal tap water i.e. non-deionized and therefore conductive water may be used as the cooling fluid instead of the deionized water used in the example of FIG. 1 .
- the grounding may protect the conductive fluid against harmful voltages, while the cooling systems 6 is cheaper and easier to maintain than the cooling system of the previous example.
- ground current may exceed the 30 A limit set by standard UL 347A for medium voltage power conversion equipment during faults.
- the switches 5 have limited electrical isolation towards the heatsink 1 , wherein the isolation is bridged by a parasitic capacitance 7 .
- FIG. 3 is a schematic view of a heatsink 1 in a medium voltage drive 10 . Both components are shown according to the present invention.
- the drive 10 may be a medium voltage drive 10 for driving an electric motor not shown in the figures.
- the heatsink 1 is grounded via a grounding capacitor 2 , connecting the heatsink 1 with ground GND.
- the capacitor 2 protects the fluid of the fluid cooling system 6 against capacitively coupled voltages. Therefore, grounding the heatsink 1 via a grounding capacitor 2 makes it possible to use simple tap water or generally non-deionized water or some other conductive fluid in the fluid cooling system 6 .
- the invention provides a low-cost fluid cooling system and simplifies the operation and maintenance of the drive 10 . At the same time, ground current during faults may be limited to less than 30 A by proper choice of capacitance value of the capacitor 2 .
- FIG. 4 shows an embodiment of the invention in which a resistor 3 is provided in parallel to the grounding capacitor 2 , further enhancing the performance of the drive by providing a path for DC (leakage) currents from heatsink 1 to ground GND.
- a voltage monitor 4 measuring the voltage across the grounding capacitor 2 may be provided for detecting faults.
- the voltage monitor 4 and the resistor 3 are shown. However, the invention may be carried out with either of these two components. Both, the voltage monitor 4 and the resistor 3 may be arranged in parallel to the capacitor 2 . No other electrical components may be present in the parallel branches of the capacitor 2 , the resistor 3 and/or the voltage monitor 4 .
- the voltage monitor 4 may be connected to some control device or controller not shown in the figure.
- the connection to the control device is indicated by the arrow left of the voltage monitor 4 .
- the control device may output some corresponding signal to indicate the detected transgression.
- the voltage monitor 4 may be used to indicate that maintenance and/or replacement of the drive 10 or parts thereof are necessary.
- the signal of the voltage monitor 4 may also be used to trip a circuit breaker that is connected between the main power supply and the drive.
- the characteristics of the capacitor 2 may be selected such that the current through the capacitor 2 during faults is limited to less than 30 A.
- the capacitor's 2 capacitance may be selected to be in the range of 0.1-10 ⁇ F.
- semiconductor switches 5 may be mounted on the heatsink 1 of the drive. Furthermore, the semiconductor switches 5 may have limited electrical isolation towards the heatsink 1 , wherein the isolation is bridged by a parasitic capacitance 7 .
- the capacitance of the isolation may be in the order of magnitude of 1 nF, i.e. orders of magnitude smaller than the chosen capacitance of capacitor 2 .
- the fluid cooling system 6 may comprise conduits, pumps and further components fluidly connected to the heatsink 1 and conductively connected to ground GND.
- the heatsink 1 may comprise conduits for the cooling fluid.
- the conduits of the heatsink 1 may be connected to the cooling system 6 or may be part of the cooling system 6 .
- the fluid of the fluid cooling system 6 may be a conductive fluid such as non-deionized water.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Power Conversion In General (AREA)
Abstract
Description
- This application claims foreign priority benefits under 35 U.S.C. § 119 to German Patent Application No. 102020133622.5 filed on Dec. 15, 2020, the content of which is hereby incorporated by reference in its entirety.
- The present invention pertains to a heatsink arrangement for a power electronic converter, in particular converters used in medium voltage power conversion such as a medium voltage drive for driving an electric motor, wherein the heatsink of the heatsink arrangement is grounded via a grounding capacitor. The invention also pertains to a power converter for driving an electric motor, comprising a corresponding heatsink arrangement, semiconductor switches mounted on the heatsink and a fluid cooling system.
- From prior art various medium voltage drives and corresponding heatsinks are known. According to some designs, the heatsinks are left ungrounded i.e. floating and deionized water or other isolating fluids are used within the cooling systems of the heatsinks. These designs ensure that both, capacitively coupled voltages and fault voltages can be tolerated by the fluid. However, a problem arising with these designs is that the deionized water cooling systems are relatively expensive and require more maintenance effort.
- According to other designs known from prior art, the heatsinks may be solidly grounded and normal tap water, i.e. non-deionized water may be used as the cooling fluid. The grounding may protect the conductive fluid against harmful voltages, while the cooling systems is cheaper and easier to maintain than in the previous example. However, as a drawback, ground current may exceed the 30 A limit set by standard UL 347A during faults.
- The aim of the present invention is to provide an improved heatsink arrangement and a power converter comprising a corresponding heatsink arrangement, which overcome the above-mentioned problems. This aim is achieved by the heatsink arrangement according to
claim 1 and the power converter according to claim 7. Preferred embodiments of the invention are subject to the dependent claims. - According to the invention, a heatsink arrangement for power electronic equipment, such as a power converter, is provided. The heatsink arrangement comprises a heatsink, which may be a cold-plate. It may have a complex geometry, comprising cooling fluid conduits and/or cooling fins. The power electronic converter may be a medium voltage drive designed for driving an electric motor. The heatsink is grounded via a grounding capacitor.
- As the capacitor protects the cooling fluid against capacitively coupled voltages, normal i.e. non-deionized water can be used as the cooling fluid. Hence, the fluid cooling systems may be provided at lower costs, while at the same time ground current during faults may be limited to less than 30 A by choosing an appropriate capacitance value of the grounding capacitor.
- In a preferred embodiment of the invention, a resistor is provided in parallel to the grounding capacitor, further enhancing the performance of the device during normal operation and faults. There may be no other components in the parallel branches of the resistor and the capacitor other than said resistor and capacitor.
- In another preferred embodiment of the invention, a voltage monitor measuring the voltage across the grounding capacitor is provided for detecting faults.
- The voltage monitor may detect permanent fault conditions of the device, which may compromise the fluid cooling system if undetected. The voltage monitor may be used for monitoring the voltage across the grounding capacitor and comparing it with a threshold value. The voltage monitor may be used in combination with a control device and/or may be used for generating an alarm and/or a signal when a fault is detected. Alternatively or additionally, the voltage monitor may be used for tripping some safety device such as a circuit-breaker in case a fault has been detected. The voltage monitor may be arranged in parallel to the capacitor and/or in parallel to the resistor.
- In a particularly preferable embodiment, the voltage across the grounding capacitor (2) is monitored and beyond a defined threshold, a signal is sent to a controller.
- In another preferred embodiment of the invention, the current through the capacitor during faults is limited to less than 30 A. The skilled person may choose the capacitor's capacitance in dependence on the overall layout and the operating voltages of the drive so as to limit the fault current through the capacitor to the cited value.
- In another preferred embodiment of the invention, the capacitor's capacitance is smaller than 19 μF and is preferably in the range of 0.1-10 μF.
- The invention is also directed at a power converter in particular a medium voltage drive for driving an electric motor, comprising a heatsink arrangement according to any of
claims 1 to 6, semiconductor switches mounted on the heatsink and a fluid cooling system. The term semiconductor switches may refer to a single switch or to any number of switches mounted on the heatsink. The switches may be mounted directly or indirectly on the heatsink. The drive may be operational for voltages greater than 1000 V and in particular in a voltage range from 1 kV to 35 kV. The drive may be designed for operation at three or more phases and/or may include at least one medium voltage insulated-gate bipolar transistor. - In a preferred embodiment of the invention, the fluid of the fluid cooling system is non-deionized water. The cooling system may comprise fluid conduits, at least one pump and/or other components typically used for providing a cooling fluid flow in a power electronic converter. The non-deionized water may be normal i.e. tap water. Thus, the drive does not have stringent requirements with respect to its cooling fluid and its production and maintenance costs can be reduced accordingly.
- In a further preferred embodiment of the invention, the semiconductor switches have limited electrical isolation towards the heatsink, which is bridged by a parasitic capacitance.
- Further features, details and advantages of the invention can be derived from the claim set and the figures described below. The figures show:
-
FIG. 1 : schematic view of a floating heatsink arrangement in a medium voltage drive according to the state of the art; -
FIG. 2 : schematic view of a solid grounded heatsink arrangement in a medium voltage drive according to the state of the art; -
FIG. 3 : schematic view of a heatsink arrangement in a medium voltage drive according to the present invention; and -
FIG. 4 : schematic view of a heatsink arrangement in a medium voltage drive according to the present invention and including heatsink voltage monitor and a parallel resistor. -
FIG. 1 is a schematic view of aheatsink 1 in amedium voltage drive 10 according to the state of the art. Theheatsink 1 is a “floating”heatsink 1 i.e. it is left ungrounded. Therefore, the fluid of thefluid cooling system 6 is chosen to be an isolating fluid such as deionized water. Grounding is indicated by GND in the figures and corresponds to an earthing. - Typically,
semiconductor switches 5 are mounted on theheatsink 1 via an insulation layer comprising a parasitic capacitance 7. Afluid cooling system 6 cools theswitches 5 through theheatsink 1. The use of deionized water as a cooling fluid raises the production and maintenance costs of thedrive 10 and complicates its maintenance. For the sake of convenience, the same reference numbers refer to the same features throughout the figures. -
FIG. 2 is a schematic view of analternative drive 10 layout, which is also known from the art. Here, theheatsink 1 is grounded. Normal tap water, i.e. non-deionized and therefore conductive water may be used as the cooling fluid instead of the deionized water used in the example ofFIG. 1 . The grounding may protect the conductive fluid against harmful voltages, while thecooling systems 6 is cheaper and easier to maintain than the cooling system of the previous example. However, as a drawback, ground current may exceed the 30 A limit set by standard UL 347A for medium voltage power conversion equipment during faults. In both embodiments ofFIGS. 1 and 2 theswitches 5 have limited electrical isolation towards theheatsink 1, wherein the isolation is bridged by a parasitic capacitance 7. -
FIG. 3 is a schematic view of aheatsink 1 in amedium voltage drive 10. Both components are shown according to the present invention. Thedrive 10 may be amedium voltage drive 10 for driving an electric motor not shown in the figures. Here, theheatsink 1 is grounded via agrounding capacitor 2, connecting theheatsink 1 with ground GND. Thecapacitor 2 protects the fluid of thefluid cooling system 6 against capacitively coupled voltages. Therefore, grounding theheatsink 1 via agrounding capacitor 2 makes it possible to use simple tap water or generally non-deionized water or some other conductive fluid in thefluid cooling system 6. The invention provides a low-cost fluid cooling system and simplifies the operation and maintenance of thedrive 10. At the same time, ground current during faults may be limited to less than 30 A by proper choice of capacitance value of thecapacitor 2. -
FIG. 4 shows an embodiment of the invention in which aresistor 3 is provided in parallel to thegrounding capacitor 2, further enhancing the performance of the drive by providing a path for DC (leakage) currents fromheatsink 1 to ground GND. - Additionally or alternatively, a voltage monitor 4 measuring the voltage across the
grounding capacitor 2 may be provided for detecting faults. In the embodiment ofFIG. 4 , both, the voltage monitor 4 and theresistor 3 are shown. However, the invention may be carried out with either of these two components. Both, the voltage monitor 4 and theresistor 3 may be arranged in parallel to thecapacitor 2. No other electrical components may be present in the parallel branches of thecapacitor 2, theresistor 3 and/or the voltage monitor 4. - The voltage monitor 4 may be connected to some control device or controller not shown in the figure. The connection to the control device is indicated by the arrow left of the voltage monitor 4. In case the voltage monitor 4 detects a voltage, which is beyond some threshold value, the control device may output some corresponding signal to indicate the detected transgression. Thus, the voltage monitor 4 may be used to indicate that maintenance and/or replacement of the
drive 10 or parts thereof are necessary. The signal of the voltage monitor 4 may also be used to trip a circuit breaker that is connected between the main power supply and the drive. - The characteristics of the
capacitor 2 may be selected such that the current through thecapacitor 2 during faults is limited to less than 30 A. As an example, when the supply voltage is 4.16 kV with 60 Hz, the capacitor's 2 capacitance may be derived such that it is smaller than the term 30 A/4.16 kV/(2×π×60 Hz)=19 μF. Preferably, the capacitor's 2 capacitance may be selected to be in the range of 0.1-10 μF. - Similarly, to what is known from the art, semiconductor switches 5 may be mounted on the
heatsink 1 of the drive. Furthermore, the semiconductor switches 5 may have limited electrical isolation towards theheatsink 1, wherein the isolation is bridged by a parasitic capacitance 7. The capacitance of the isolation may be in the order of magnitude of 1 nF, i.e. orders of magnitude smaller than the chosen capacitance ofcapacitor 2. - The
fluid cooling system 6 may comprise conduits, pumps and further components fluidly connected to theheatsink 1 and conductively connected to ground GND. Theheatsink 1 may comprise conduits for the cooling fluid. The conduits of theheatsink 1 may be connected to thecooling system 6 or may be part of thecooling system 6. As theheatsink 1 is grounded via thecapacitor 2, the fluid of thefluid cooling system 6 may be a conductive fluid such as non-deionized water. - The invention is not limited to any of the above embodiments. It may be modified in manifold ways. All features present in the claims, the description and the figures including constructive details, special configurations may be relevant to the invention on their own or in combination with each other.
Claims (17)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102020133622.5A DE102020133622A1 (en) | 2020-12-15 | 2020-12-15 | Heatsink arrangement for a power converter |
DE102020133622.5 | 2020-12-15 |
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US20220192049A1 true US20220192049A1 (en) | 2022-06-16 |
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US17/543,859 Pending US20220192049A1 (en) | 2020-12-15 | 2021-12-07 | Heatsink arrangement for a power converter |
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US (1) | US20220192049A1 (en) |
CN (1) | CN114640237A (en) |
DE (1) | DE102020133622A1 (en) |
Cited By (1)
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---|---|---|---|---|
EP4312475A1 (en) * | 2022-07-25 | 2024-01-31 | Mazda Motor Corporation | Inverter |
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US8558481B2 (en) * | 2010-09-10 | 2013-10-15 | Samsung Electronics Co., Ltd. | Luminescence driving apparatus, display apparatus, and driving method thereof |
US20120068681A1 (en) * | 2010-09-22 | 2012-03-22 | Infineon Technologies North America Corp. | Integrated Circuit Package With Reduced Parasitic Loop Inductance |
US20200083177A1 (en) * | 2014-02-26 | 2020-03-12 | International Business Machines Corporation | Shielded package assemblies with integrated capacitor |
US20180156846A1 (en) * | 2014-12-29 | 2018-06-07 | Eaton Corporation | Voltage sensor housing and assembly including the same |
US20180218963A1 (en) * | 2015-07-31 | 2018-08-02 | Hitachi Automotive Systems, Ltd. | Power Module |
US10924011B2 (en) * | 2016-02-09 | 2021-02-16 | Faraday Semi, Inc. | Chip embedded power converters |
US20210044179A1 (en) * | 2018-04-09 | 2021-02-11 | Mitsubishi Electric Corporation | Rotating electric machine |
US20200404804A1 (en) * | 2019-06-20 | 2020-12-24 | Eaton Intelligent Power Limited | System, method, and apparatus for integrating high power density power electronics on a mobile application |
US20210168965A1 (en) * | 2019-12-03 | 2021-06-03 | The Florida State University Research Foundation, Inc. | Integrated thermal-electrical component for power electronics converters |
US20210225753A1 (en) * | 2020-01-22 | 2021-07-22 | Delta Electronics (Shanghai) Co., Ltd. | Carrier board and power module using same |
US11108336B1 (en) * | 2020-03-17 | 2021-08-31 | Hamilton Sundstrand Corporation | Power converter |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP4312475A1 (en) * | 2022-07-25 | 2024-01-31 | Mazda Motor Corporation | Inverter |
Also Published As
Publication number | Publication date |
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DE102020133622A1 (en) | 2022-06-15 |
CN114640237A (en) | 2022-06-17 |
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